Re: Buffer ReadMe Confuse

2023-09-14 Thread Andy Fan 
On Fri, Sep 15, 2023 at 4:08 AM jacktby jacktby  wrote:

> In buffer README, I see “Pins may not be held across transaction
> boundaries, however.” I think for different transactions, they can pin the
> same buffer page, why not? For concurrent read transactions, they could
> read the one and the same buffer page.
>
>
You are right that different transactions can pin the same buffer,
but that does not conflict with what the README says, which is talking
about once the transaction is completed, all the Pins are removed.

-- 
Best Regards
Andy Fan

Buffer ReadMe Confuse

2023-09-14 Thread jacktby jacktby 
In buffer README, I see “Pins may not be held across transaction boundaries, 
however.” I think for different transactions, they can pin the same buffer 
page, why not? For concurrent read transactions, they could read the one and 
the same buffer page.